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Perl: basic perl regex parsing for word@word


Perl: basic perl regex parsing for word@word

By : Voltron
Date : November 26 2020, 01:01 AM
With these it helps There are two problems in the command line:
You assign variable $aa but do pattern matching on variable $kk.
code :
perl -e 'my $aa = "abcd@abcd"; print "$aa\n"'
perl -e 'my $aa = "abcd\@abcd"; if ($aa =~ /(\w+)@(\w+)/ ) {print "\n $1 \n $2 \n";}'


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Perl regex word matching

Perl regex word matching


By : mRJ
Date : March 29 2020, 07:55 AM
I wish this help you How do I match the following strings using a perl regexp ? , (?:PAT1|PAT2) is to patterns as [ab] is to chars.
code :
/^(?:(?:extern|pure|virtual|void)\s+)*function/
Removing word from regex in perl

Removing word from regex in perl


By : Nishant Gandhi
Date : March 29 2020, 07:55 AM
around this issue I have a string which can has a value like,
code :
EXT::USCC::USCCAuth,?|,?EXT::USCC::USCCAuth
How to regex first letter of each word perl

How to regex first letter of each word perl


By : Sco Max
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I need to grep out just the first letters of a string. , Try this: (remove +)
code :
(\b\w)
Perl regex first word

Perl regex first word


By : Ping Lu
Date : March 29 2020, 07:55 AM
it helps some times I am very new to regex in perl and I have the following line:
code :
#!/usr/bin/perl
use strict;
use warnings;
my $line = q{MD5ajdhe728ndsdhsds83ndsds /some/path/};
$line =~ /^MD5([a-zA-Z0-9]+)/;
print $1; 
Why does this regex in perl work for one word but not another?

Why does this regex in perl work for one word but not another?


By : yangqiang
Date : March 29 2020, 07:55 AM
may help you .
use 5.006 kind of odd if you are just beginning to learn Perl ... That is an ancient version.
code :
use strict;
use warnings;
use File::Find;

my @files;

find(
    sub {
        return if -d;
        return unless / [.] pl \z/x;
        push @files, $File::Find::name;
    },
    '.',
);

for my $file ( @files ) {
    open my $fh, '<', $file
        or die "Could not open file $file: $!";

    while (my $line = <$fh>) {
        if (my ($substring) = ($line =~ m{ (?:file|directory) \( ([^\)]*) \) }x)) {
            print "$substring\n";
        }
    }

    close $fh;
}

# file(stuff)
# directory(other)
stuff
other
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